EP2041479A1 - Hintergrundbeleuchtung mittels nichtelektrischer energiequellen - Google Patents
Hintergrundbeleuchtung mittels nichtelektrischer energiequellenInfo
- Publication number
- EP2041479A1 EP2041479A1 EP07726064A EP07726064A EP2041479A1 EP 2041479 A1 EP2041479 A1 EP 2041479A1 EP 07726064 A EP07726064 A EP 07726064A EP 07726064 A EP07726064 A EP 07726064A EP 2041479 A1 EP2041479 A1 EP 2041479A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lighting unit
- field device
- unit according
- lighting
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005286 illumination Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 18
- 239000012857 radioactive material Substances 0.000 claims description 11
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 claims description 10
- 239000007800 oxidant agent Substances 0.000 claims description 9
- 229910052722 tritium Inorganic materials 0.000 claims description 9
- 230000005865 ionizing radiation Effects 0.000 claims description 8
- 238000004020 luminiscence type Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 7
- 230000002285 radioactive effect Effects 0.000 abstract description 7
- 239000011521 glass Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002775 capsule Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005393 sonoluminescence Methods 0.000 description 1
- 238000000904 thermoluminescence Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence
- F21K2/06—Non-electric light sources using luminescence; Light sources using electrochemiluminescence using chemiluminescence
Definitions
- the present invention relates to lighting for field device displays.
- the present invention relates to a lighting unit for a field device display module, a level gauge or pressure gauge with such a lighting unit, the use of such lighting unit for a level gauge or pressure gauge and a method for illuminating a field device display module.
- Known field device display modules for level measurement have lighting units which have to be supplied with power, that is to say require additional energy sources. These are, for example, light-emitting diodes, cold cathode lamps (CoId Cathode Fluorescent Lamp, CCFL) or electroluminescent films.
- a lighting unit for a field device display module comprising a lighting element for generating luminescent light, wherein the luminescent light is designed to illuminate the field device display module.
- the lighting unit comprises a luminescent material.
- the luminescent material is excited by a light source, such as sunlight, and lights up after the light source goes out for a long time.
- a light source such as sunlight
- the luminescent substance does not or rarely needs to be replaced.
- the illumination unit is provided for providing a backlight for the field device display module.
- the lighting unit can be mounted directly behind the field device display module.
- lighting unit and field device display module can be configured as a total module, which can then be installed as a contiguous component in the field device.
- the illumination element has a chemiluminescent element for carrying out a chemiluminescent process for generating the luminescence light.
- the luminescent light-generating chemical reaction can be so long lasting that replacement of the backlight during use of the field device is not or only rarely necessary.
- the chemiluminescent element comprises an oxidizing agent and a dye which are miscible when needed to produce the luminescent light.
- the oxidizing agent is, for example, hypochlorite, which oxidizes with the dye, so that luminescent light is formed.
- the lighting unit further comprises a first storage chamber, a second storage chamber and a mixing chamber, wherein the oxidizing agent in the first storage chamber and the dye are arranged in the second storage chamber and stepwise introduced into the mixing chamber, where necessary then react with each other to generate the luminescent light.
- the light-generating chemical reaction can be started as needed, depending on whether lighting is needed for the display or not.
- the lighting unit further comprises a control unit for controlling a mixing rate between oxidizing agent and dye.
- the light can optionally be switched on or off.
- the intensity of the luminescent light can be controlled.
- an individual adjustment of the illuminance to the respective user is possible. Turning off the chemical reaction can reduce the amount of chemicals used, ultimately saving energy.
- the setting of the mixing rate can be done for example by controlling one or more corresponding pumps or valves.
- Small scale micromechanical pumps or valves can be used here, which are arranged for example on a corresponding chip.
- Illuminating element is a radioactive material, which is designed to generate an ionizing radiation.
- the ionizing radiation strikes a, for example, the vitreous of the
- the radioactive material can be introduced into a glass body, which is then pushed behind the field device display module.
- a shield for absorbing radioactive radiation is provided, which is not emitted in the direction of the phosphor layer.
- this shield is attached directly to the lighting element, so that the lighting element can be installed together with the shield as a modular component in the field device.
- the lighting unit further comprises a shield for shielding luminescent light, which is not emitted in the direction of the display.
- the shield can be designed as a reflector, which reflects back the light in the direction of the display.
- the efficiency of the lighting unit can be increased.
- the lighting unit further comprises an adhesive surface for fastening the lighting element to the field device display module.
- the lighting unit is adapted to the shape of the field device display module.
- the shape adaptation improves the contact between the illumination unit and the display, so that the luminescent light can be transmitted largely without interference, without undesired scattering or reflection occurring in the area between the two units.
- the illumination unit furthermore comprises a field device housing, wherein the field device housing has a cavity into which the illumination element can be integrated. Since many components can often be placed in a field device housing interior or cavity, there may be a shortage of space in the field device housing, by providing an extra cavity in which the illumination unit can be integrated, such space problems are avoided.
- the available space can be optimally utilized. Furthermore, this is no Extraverschraubung or otherwise securing the lighting element in the housing required because it is held by the walls of the cavity.
- the field device housing is made of an absorbing material so that the radioactive radiation can not escape to the outside.
- the illumination unit is set up for operation with a field device selected from the group comprising a fill level radar, a TDR level meter, an ultrasonic level meter, a capacitive field device, a pressure gauge and a limit level field device.
- a field device selected from the group comprising a fill level radar, a TDR level meter, an ultrasonic level meter, a capacitive field device, a pressure gauge and a limit level field device.
- a fill level measuring device is specified for a lighting unit described above. This is, for example, a level radar.
- a method for illuminating a field device display module is specified, wherein Luminescence light is generated by a lighting element and the field device display module is illuminated with the luminescent light.
- the method of providing a backlight for the field device display module applies.
- the luminescent light is generated here by a chemiluminescent process or by the reaction of an ionizing radiation with a phosphorescent layer.
- a chemiluminescent process or by the reaction of an ionizing radiation with a phosphorescent layer.
- both methods so that both chemiluminescent light and phosphorescent light can be generated. If, for example, the brightness of the phosphorescent light is insufficient, the chemiluminescent process can be switched on.
- the luminescent light can be generated in other ways, such as by the action of heat (thermoluminescence).
- the luminescence light can also be generated by the action of ultrasound waves on a corresponding liquid (sonoluminescence).
- FIG. 1 shows a schematic representation of a lighting unit according to an exemplary embodiment of the present invention.
- FIG. 2 shows a schematic illustration of a lighting unit according to a further exemplary embodiment of the present invention.
- FIG. 3 shows a schematic representation of a lighting unit according to a further exemplary embodiment of the present invention.
- FIG. 4 is a schematic diagram of a controller for mixing the chemical substances for producing luminescent light according to an embodiment of the present invention.
- FIG. 5 shows a schematic representation of a level radar according to an exemplary embodiment of the present invention.
- FIG. 6 shows a flowchart of a method according to an embodiment of the present invention.
- the lighting unit comprises a housing 101 in which the chemiluminescent process takes place.
- a reflector 105 is mounted, which luminescence, which is not emitted in the direction of the display 102, reflected towards the display.
- the reflector 105 may also be designed as an absorber, so that stray light is absorbed.
- a heating element for example in the form of a heating foil to protect the display 102 and the lighting element 101 from icing or even to bring operating temperature.
- the lighting element 101 is attached to the back of the display 102 as a backlight.
- the lighting element 101 may be glued to the display.
- an adhesive layer may be provided on the lighting element 101.
- fasteners possible such as glands, jamming or clip-like attachment.
- FIG. 2 shows a schematic illustration of a lighting unit according to a further exemplary embodiment of the present invention.
- the lighting element 101 is designed here as a glass body, in which a radioactive material, such. Tritium (e.g., in the form of glass capsules).
- Radioactive processes have been used to illuminate wristwatches or alarm clocks.
- the radioactive material is attached here together with a corresponding phosphorescent on the numbers and hands.
- Tritium is a weak radioactive bulbs, which can be used among other things also for digits and hands. Tritium is an isotope of hydrogen, so a volatile gas. It is weakly radioactive with a half life of 12.3 years. Luminous color, which is excited by tritium, does not require "charging" by external light. The volatile gas is bound as tritiated plastic (polymer) and stimulates with its electron radiation a passive light source (eg zinc sulphide) for the emission of visible light.
- the tritium (or other suitable radioactive material) may be firmly embedded in a borosite glass capsule or the like. Within about 12 years The number of tritium atoms is reduced by natural decay by about 75%. However, the human eye still perceives this value as half as bright as the full power.
- the tiny high pressure hermetically sealed tiny filaments are resistant to water, oil and most corrosive materials. Even extreme temperatures (- 170 ° Celsius to + 400 ° Celsius) and temperature shocks are no problem for the tritium gas light source lighting system.
- the radioactive material emits radioactive radiation (e.g., in the form of beta particles). This radiation strikes a phosphorescent layer 106 applied to the glass body 101 and stimulates it to glow.
- the imitated luminescent light is a kind of cold light radiation. With the material tritium this layer shines for at least ten years, without the need for a further energy supply.
- a shield 105 is provided, which surrounds the glass body 101 on all sides, except on the display 102 side facing. This shield 105 may be attached directly to the glass body 101, so that no total or only a very small amount of radioactivity emerges from the overall module display illumination unit 102, 101.
- the illumination element 101 is a chemiluminescent element (as in FIG. 1).
- the lighting element 101 has two storage chambers 107, 108, which can deliver oxidizing agent or dye to a mixing chamber 109.
- the mixing chamber between the two storage chambers 107, 108 is arranged. But other arrangements are possible.
- separations 110, 1 11 are present, which can be opened if necessary.
- controllable openings or pumps are incorporated in the partitions 110, 111 which can control the rate of discharge of the respective chemicals from the storage chambers into the mixing chamber.
- the light intensity and the duration of the luminescence light generation can be controlled.
- Luminescent light is generated by this chemical process and the display 102 is lit.
- the lifetime of the lighting unit can be extended so much that no replacement is necessary.
- Fig. 4 shows a schematic representation of a control for adjusting the mixing rate between oxidizing agent and dye.
- pumps 112, 116, 119 and valves or flaps 113, 117, 1 18 are installed, which can be controlled or regulated by an electronic control unit 114.
- the pumps and flaps / valves 112, 116, 119, 113, 117, 118 are, for example, micromechanical pumps and flaps / valves which can be integrated on a chip.
- a light sensor (not shown in FIG. 4) or further sensors, such as a timer, may be connected to the control unit 114.
- the mixing rate can be adjusted depending on the time of day or depending on the external light ratio.
- a computer 115 is connected to the control unit 114, which controls a corresponding mixing program. That on the Computer 115 running control program can be programmed by the user as required.
- FIG. 5 shows a schematic representation of a fill level radar according to an embodiment of the present invention.
- the fill level radar 500 here has a housing 501 and an antenna 502.
- the housing 501 serves to receive the transmitting / receiving electronics and the display 102 with the lighting unit. For this purpose, a corresponding cavity is provided in the housing 501.
- the antenna 502 is used to transmit a transmission signal 504, which is reflected at the level surface 503 and is received as a reception signal 505 from the antenna.
- a first step luminescence light is generated by a lighting element.
- a chemiluminescent reaction takes place within the illumination unit.
- ionizing radiation can be generated in the illumination unit, which excites a phosphorescent layer, so that it then emits luminescent light in the form of phosphorescent light.
- the field device display module is illuminated with the luminescent light, for example from behind as a backlight.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Electroluminescent Light Sources (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US83064406P | 2006-07-13 | 2006-07-13 | |
| DE102006032457A DE102006032457B4 (de) | 2006-07-13 | 2006-07-13 | Hintergrundbeleuchtung mittels nichtelektrischer Eneregiequellen |
| PCT/EP2007/005359 WO2008006444A1 (de) | 2006-07-13 | 2007-06-18 | Hintergrundbeleuchtung mittels nichtelektrischer energiequellen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2041479A1 true EP2041479A1 (de) | 2009-04-01 |
| EP2041479B1 EP2041479B1 (de) | 2011-12-28 |
Family
ID=38830546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07726064A Not-in-force EP2041479B1 (de) | 2006-07-13 | 2007-06-18 | Hintergrundbeleuchtung mittels nichtelektrischer energiequellen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7798661B2 (de) |
| EP (1) | EP2041479B1 (de) |
| CN (1) | CN101490462B (de) |
| DE (1) | DE102006032457B4 (de) |
| WO (1) | WO2008006444A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8673010B2 (en) * | 2007-06-29 | 2014-03-18 | DePuy Synthes Products, LLC | Flexible chain implants and instrumentation |
| US9510953B2 (en) * | 2012-03-16 | 2016-12-06 | Vertebral Technologies, Inc. | Modular segmented disc nucleus implant |
| DE102016105195A1 (de) | 2016-03-21 | 2017-09-21 | Endress + Hauser Gmbh + Co. Kg | Feldgerät der Automatisierungstechnik |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3511612A (en) * | 1967-03-20 | 1970-05-12 | American Cyanamid Co | Chemiluminescent systems |
| JPS4915397A (de) * | 1972-05-17 | 1974-02-09 | ||
| US4365018A (en) * | 1981-05-11 | 1982-12-21 | The Mead Corporation | Imaging element and an imaging technique |
| CH674596A5 (de) * | 1988-02-12 | 1990-06-15 | Sulzer Ag | |
| US5557869A (en) * | 1991-02-27 | 1996-09-24 | Douglas; Andre J. T. | Devices for alteration and display of chemiluminescent light |
| US5406463A (en) | 1994-05-25 | 1995-04-11 | Schexnayder, Sr.; Louie M. | Chemi-luminescent display for, for example, emergency sign use |
| AR020506A1 (es) * | 1998-09-24 | 2002-05-15 | Ericsson Telefon Ab L M | Conjunto visor y retroluz |
| US6163359A (en) * | 1998-12-02 | 2000-12-19 | Intermec Ip Corp. | Liquid crystal display and backlight heater |
| JP2001199961A (ja) * | 2000-01-21 | 2001-07-24 | Fuji Photo Film Co Ltd | 重合性溶融塩モノマー、電解質組成物および電気化学電池 |
| US6516678B2 (en) | 2000-11-09 | 2003-02-11 | Michael G. Hamilton | Industrial diagnostic gauge indicator insert and industrial diagnostic gauges having same |
| DE10059518A1 (de) * | 2000-11-30 | 2002-06-06 | Mannesmann Vdo Ag | Display mit einer Heizung |
| JP2002343558A (ja) * | 2001-05-16 | 2002-11-29 | Matsushita Electric Ind Co Ltd | El素子及びこれを用いた照光ユニット |
| JP4222466B2 (ja) * | 2001-06-14 | 2009-02-12 | 富士フイルム株式会社 | 電荷輸送材料、それを用いた光電変換素子及び光電池、並びにピリジン化合物 |
| US7540621B2 (en) * | 2003-09-26 | 2009-06-02 | Formaglow Ltd | Multi-shape and multi-color chemiluminescent device |
-
2006
- 2006-07-13 DE DE102006032457A patent/DE102006032457B4/de not_active Expired - Fee Related
-
2007
- 2007-06-18 WO PCT/EP2007/005359 patent/WO2008006444A1/de not_active Ceased
- 2007-06-18 EP EP07726064A patent/EP2041479B1/de not_active Not-in-force
- 2007-06-18 US US11/764,586 patent/US7798661B2/en not_active Expired - Fee Related
- 2007-06-18 CN CN200780026563.6A patent/CN101490462B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008006444A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101490462B (zh) | 2011-08-10 |
| DE102006032457B4 (de) | 2013-06-13 |
| US7798661B2 (en) | 2010-09-21 |
| WO2008006444A1 (de) | 2008-01-17 |
| EP2041479B1 (de) | 2011-12-28 |
| DE102006032457A1 (de) | 2008-01-24 |
| CN101490462A (zh) | 2009-07-22 |
| US20080013301A1 (en) | 2008-01-17 |
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